/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 *
 */
package com.google.code.bigyang.buffer;

import java.io.IOException;
import java.nio.ByteBuffer;

import com.google.code.bigyang.util.ByteBufferUtil;
import com.google.code.bigyang.util.DumpUtil;

public class NioBufferImpl extends AbstractNioBuffer {
	
	private static final String LINE_SEPARATOR = System.getProperty("line.separator");
	
	protected ByteBuffer buf;
	
	public NioBufferImpl(ByteBuffer buf) {
		this.buf = buf;
	}
	
	@Override
	public boolean isDirect() {
		return buf.isDirect();
	}

	@Override
	public ByteBuffer buf() {
		return buf;
	}

	public String dump() {
		return DumpUtil.dump(buf);
	}

	public void dump(Appendable out, String indent) throws IOException {
		throw new UnsupportedOperationException();
	}

	public String toString() {
		return super.toString()+ LINE_SEPARATOR +DumpUtil.dump(buf);
	}


	public Buffer expand(int size) {
		if(size <= 0) {
			return this;
		}
		buf = ByteBufferUtil.allocateByteBuffer(size, buf().isDirect());
		return this;
	}
	

}
